Screw head



FIG. 1 is a perspective view of a screw head showing my new design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a rear elevational view thereof;

FIG. 4 is a left side view thereof;

FIG. 5 is a right side view thereof;

FIG. 6 is a top plan view thereof;

FIG. 7 is a bottom plan view thereof; and,

FIG. 8 is an environmental perspective view of thereof.

The broken lines in the drawings illustrate portions of the screw headand form no part of the claimed design.

CLAIM The ornamental design for a screw head, as shown and described.